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A/C pressure even on low and high sides?

Tiny
SHAWN MACQUEEN
  • MEMBER
  • 2001 FORD MUSTANG
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 154,000 MILES
I bought my car with a locked-up A/C compressor. I changed out the compressor, flushed out 6 ounces of oil from the evaporator, replaced the condenser, drier, flushed all lines. A/C will not accept freon, won't pull it in. System is 110 psi on low and high side with compressor running by jumping the low-pressure switch with jumper wire.
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Saturday, July 22nd, 2023 AT 12:28 PM

9 Replies

Tiny
MATHGEN
  • MECHANIC
  • 128 POSTS
Did you replace the orifice tube?
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Sunday, July 23rd, 2023 AT 4:05 AM
Tiny
SHAWN MACQUEEN
  • MEMBER
  • 6 POSTS
Yes, I replaced orifice tube, condenser, drier, flushed evaporator and li es also. Maybe they sent me a bad compressor from the get go? A/C clutch does spin however.
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Tuesday, July 25th, 2023 AT 6:22 AM
Tiny
MATHGEN
  • MECHANIC
  • 128 POSTS
Are the valves on the manifold gauge set fully open?
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Tuesday, July 25th, 2023 AT 9:00 AM
Tiny
SHAWN MACQUEEN
  • MEMBER
  • 6 POSTS
Yes, they are both open fully.
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Wednesday, July 26th, 2023 AT 5:13 PM
Tiny
SHAWN MACQUEEN
  • MEMBER
  • 6 POSTS
Basically, I've replaced or flushed everything I could. The evaporator has been flushed twice just to make sure it's free flowing. A/C compressor clutch spins when you jumper the low-pressure switch. Flushed lines etc. There can't or shouldn't be any obstructions? I can only go back to wondering if it's the remanufactured ac compressor bad from get go maybe?
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Wednesday, July 26th, 2023 AT 5:18 PM
Tiny
SHAWN MACQUEEN
  • MEMBER
  • 6 POSTS
In the site glass you can see the Freon just sitting in the gauges there not being sucked into the low side at all.
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Wednesday, July 26th, 2023 AT 5:19 PM
Tiny
MATHGEN
  • MECHANIC
  • 128 POSTS
At this point I would agree that you may have a faulty compressor.
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Thursday, July 27th, 2023 AT 8:01 AM
Tiny
SHAWN MACQUEEN
  • MEMBER
  • 6 POSTS
I'm going to swap out the ac compressor again and I'll let you know what the results are. Thanks for your insight! Fingers crossed.
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Friday, July 28th, 2023 AT 5:18 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Hi,

I notice we haven't heard from you for a couple of days. Have you had any luck replacing the compressor? We're interested in knowing.

Take care,

Joe
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Sunday, July 30th, 2023 AT 8:57 PM

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